BoFs do not have to be about FLOSS topics. Want a Maker BoF? A board games BoF? How about Cloud Computing or Open Government? It could even be an offsite excursion. A BoF is whatever topic you want to bring people together over.

BoFs should be as informal as possible with group interaction ( not just one person giving a presentation ). Even better is if there is positive inter-group interaction such as multiple local user groups meeting together or various database groups meeting to discuss future database and big data needs in the FLOSS ecosystem